After running "standard dynamics cascade" it is possible to select a ligand conformation of interest for further study. The procedure is to copy this ligand, open a new window and pasted it. I did this many times in the past and was OK. However, this time, the pasted molecule showed up strangely. I has 2 strings in the hierarchy, instead of one. It cannot be saved and cannot be typed. Any suggestion will be much appreciated, Franco